Brake construction for sole-cutting machines



May 3,1927. 1,627,370

H. K. BAYER ET AL BRAKE CONSTRUCTION FOR SOLE CUTTING MACHINES Filed April 11i 1925 Patented May 3,1927.

UNITED STATES PATENT OFFICE.

HERMAN K. BAYER AND HENRYJ. EPSTEIN, Gl" ST. LOUIS, MISSOURI.

BRAKE CONSTRUCTION FOR- SOLE-CUTTNG MACHINES.

Applicationlilcd April l1, 1925. Serial No. 22,304.

This invention relates to brake mechanism, and has tor its object to improve the construction oi'v brake shown in our pending application Serial No. 729,689, tiled August 2, 1924-.

In the device oit said ailiplication, a resilient brake band is shown siuroundinpr a. drinn, and which is adapted to be released from engagement with the drum by separating its ends. The brake band is mounted on a slidable casting, so that1 as 'the ends el the brake band are Separated, the casting may move away 'from the drum to cari?,7 the part of the baud secured to the casting out of contact with the brake drum. While thie arrangement is entirely operative, it has the disadvantage that the pointe adjacent'. the opposite ends of the casting' become weak'- ened by use, and after a greater or lees length ot time, will break oil'.

To remedy the above detect, we have devised the coi'istruction ot the present invention, in which a pair olf' brake shoes are substituted tor the sii'igrle resilient. brahe band ot our prior application, these broke shoes being' non-resilient and termine, .when in engagement with the brake drum, subl stantially a continuous circular band. Each of the brake shoes is mounted at one end on a casting' which, in turn, is pivotally mounted on a slii'lable support. The opposite ends ot these brake shoes are designed to be opened and closed in the same manner es described in our prior appli zation, and in the opening' operation, the :shoes are bodily moved front engagemel'it with the bral-e drum and their Support will. slide outward to permit ot the disengagement of the tired ends of the brake shoes from engagement with the drum. We do not find it necessary to employ a spring to permit this disengagement, as in our prior application, the act ot separating the brake shoes eimnltaneeuslyv causing an outward movement ot their port.

The invention is illustrated in the accompanying drawing, in which- Figure 1 is a View ot the lower part ot a sole-cuttingi machine such as shown in our prior application, illuetrating` the brake drum and our improved brake mechanism connected. therewith;

Figure 2 is a broken elevational view showing, on an enlarged scale, the mechanism at the right ot Figure l; and

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ployed in other coimections, and hence we have illustrated only the lower part of a soie-cutting maclihie to bringinto view a rotary drinn whose motion to be arrested.l

liet i' now to the drawing, t-he numerals l indicate stanrjlarde oi' an end iframe Q, a machine having a driven shaft 3 on which is inounteigl a brake drum et. Mounted at one side oit a stai'idard 1 is a rectangular stud on which is elidably supported a casting 6 through the medium ot a slot 7. Said castingr has reduced lateral extei'isions 8., preferably formed integral therewith, on which are pivotally mounted, at points' indicated by the ,numerals 9, the biinrcated ends l() of'two brackets il, it?, respectively, which are preferably riveted, 'as indicated at 13, to the outer sides ot the inner end vportions ot two substantially semi-'cylindrical brake shoes l-e't, 15, respectively. rlhe brake shoes 111-, 15 are designed to embrace the drum Al practically around its entire circumference, and have secured to their outer end portions, oppositie to .those `iust described, tivo -astiiiggs iti, i7, respectively, to which are pivotall y connected at points indicated |by the numerale 18, tivo rods 19 and 2t), the lower ends of w iich arev pivotally secured at 2l, Q2, respectively, to the opposite ends ot a rockingr member 23, clamped on `a lever arm which is, in turn, secured on the end or. a rock shaft 25, mounted at one side ot the machine in the standards 1.v This rock sha tis adzq'ited to be turned to move the rod 19 upward and draw the rod 2(1)` downward and thus separate the brake shoes 1&1-, 15 by the operator pressing` down on the t-readle 26, the inner end of which is secured to the rock shaft, and the outer end of which projects beyond the machine to a position giving easy access to the toot oi the operator. A springI 27 is connected at one end to this treadle and at its upper end to the frame of the machine,V and operates to raise the treadle to apply the brake shoee whenever `the foot. ofthe operator is removed from the treadle. The two castings 16, 17V are preferably connected by a coil spring 28, which ad de its force to that of the spring 27 Sil.

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applied to thus separate the brake s acts to move the fasting' '5 outward i n the Stud i, thereby moving! the iiaed ends oi; the

brake shoes troni eijinaejement with the drum. ii'vhen the treadle releaseifl and the springs I( and :Bti di'aiv the bra'iie into engagereinent with the drinn` the oi movement ot the eastino' tj oet-nrs.

By the above Construction, no beni'iiiiir ol' the brake shoes lflt, l5 oiifnrs, and henne there is no liabilitj,i ot breakage a i the i t ot connection with the ll an as in oiir prior device releriird to.

lV e claim:

l. In combination with a rotatible biahe drinn. brake meelianism lor arresting the motion olt the same eon'iijiriifing a movable support adapted il'or movemi'fnt onli,Y in a direction 'adial with ,reepooi to saii'l drinn, a pair ot brackets pivota" y moiiiiied on said support and havingv portions n'iovable to Ward and 'trom ,:ieh other, a pair oit semieylindrii'zil brake shoes siiiroiindii said bake drinn and seeiired at adioin end portions to the i'esi'ieetive braeke":-1, meansl tor sepa ating the opposite adjoiningend portions of said bralie shoes to eil'eet disengagement ot the bra he shoes troni the drinn, and automatic means 'tor returning the b alte shoes into engagement ivith `said drinn.

,ln combination with a rotatabie brake drinnI` brake mechanism itor arresting;l the inotion of the same comprisingY a slidable support adapted tor movementv onliT in a direi*- tion adial i'itli respeet to said drinn, a pair oit brackets pivotally moiinted on said snpport and having portions .movable toward and from eaeh other, ay pair of semreylindri- "al brake shoes surrounding' said brake drinn and see-tired at adjoininpl enit portions tothe respective brarliets, means 'for sep: rating;v the opposite adjoininpl end portions ot said b 'alie shoes to ett'eet disengagement ot the brake shoes trom the drinn, and antomatie means Ytor returning;` the brake shoes into enagement with said drinn.

in combination with a rotatable brake drinn, brake meehanism tor arresting the motion ot the same i'oinprisingl a slidable support adapted i'or movement only in a direction radial with respect to said drum, a pair oit'tnaeltets pivotallv mounted on said support and having' portions movablel toward and from each other, a pair oit' semieylindri 'al brake shoes surrounding,` said brake drinn and seeiired at adjoining` end portions to the respective brackets meant connected vvith the ipposite ends ot said brake shoes and movable in oppt'isite direetions to eieet disengagremeiit ot the brake shoes; from the drinn`r a treadle operativel)Y einineetod with said means and operatii'ip` iipon iilepression, to release engaieii'ient ot the brake shoes and, iipon iipivard movement, to ell'eet eiiirapeinent ol? the brake shoesy with the drinn, and nieans lor :aiisini:v saidv treadle to be raised upon release thereof.

st. n combination ivith a rotatable brake drinn, bi'alte neehanisin tor ai'iestinil` the. motion or the same comprising' a slidable siiiiiport, a pair ol' senii-ivlinilrieal hralte shoes siibstantiall'v siirroiiiiding` said brake drinn and pivotal'iy n'iounted at adjoining; end iiortions on said ,f-iiipport in a manner to permit the adjacent ends thereo'l'Y to move toward and ilii'oin eaeh other, n eans operable at will 'tor separatina` the opposite adjoining end portions o l" d brake shoes to et'lfei't disenigapjemei'it tl'iereo'l troni the drun'i` and aiitomatie means lor retiiri'iinir the brake shoes into erifiaeeineiit with said drinn.

in eoinbinatii'in with a rotatable b alie .ilrnin, brake mechanism tor arresting,4 the motion ot the saine comprisingT a slidable support, a pair ot semi-eviindrie;l brake Shoes siihstantiall iv siii'roiini'liniiv said b al/Ie drinn and pivotalilv nionntei'l at adjoining end portions on said si'ipport in a manner to permit the adjacent ends thereol to move toward and liroin eaeh other, means operaiiile at will :tor seiiiaratinn the opposite adjoin ing' end portions of said brake shoes to etieii disengagement thereof from the drum, antoinatio means for retiiri'iing the brake shoes into engagement Yivith said drinn, and a spring eonneetingr the other opposite adjoin ingr end portions of saii'l brake shoes and tending to draw said end portions together.

(3. .in combination with a rotatable brake drinn, a pair ot' brake shoes substantiailyY siirroiindiirel said brake drinn, slidable meansy at one side ol the drinn with ivhieh adjoining end portions ot said liale shoes are movable, means operable at will l'or separating` the other adjoining' end portions ot the brake shoes and tlierebj/,f bodily moving the tirst mentioned end portions out ol' engagement With the hralie drum, and aiitomatio means 'tor returning' the b alte shoes into engagement with said drinn, the lii'st mentioned adjoining' end portions ot the bralte shoes being capable ot movement toward and trom eaeh other.

In testin'iong whereof, ive set oiir hands.

have hereunto HE tililifl l. Bi'xrii'lll. HENRY J. EPSTEIN.

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